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Finding the Fourth Proportional to 139,231.80, 192,140.04 and 75,569.60

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Solution

The fourth proportional to 139,231.80, 192,140.04 and 75,569.60 is: 104,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,231.80 : 192,140.04 = 75,569.60 : x
  2. Step 2: Convert to fraction form
    139,231.80/192,140.04 = 75,569.60/x
  3. Step 3: Cross multiply
    139,231.80x = 192,140.04 × 75,569.60
  4. Step 4: Simplify right side
    139,231.80x = 14,519,945,966.78
  5. Step 5: Solve for x
    x = 14,519,945,966.78/139,231.80
  6. Step 6: Final answer
    x = 104,286.13

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